Momentum Calculator
Linear momentum combines an object’s mass with its signed velocity along a chosen axis.
How to use this calculator
- Enter mass in kilograms and velocity in metres per second. Negative velocity indicates the chosen negative direction.
- Check the labels and units before using a result outside this page.
- Change one input at a time if you want to compare scenarios.
Formula and method
p = mv
- p = mv
- The sign depends on the coordinate direction; the calculator does not model a collision or the full motion of a system.
Worked examples
Worked example
A 2 kg object moves at 3 m/s along the positive direction.
Momentum is 2 × 3 = 6 kg·m/s.
Momentum is 2 × 3 = 6 kg·m/s.
Understanding the result
Linear momentum combines an object’s mass with its signed velocity along a chosen axis.
The sign depends on the coordinate direction; the calculator does not model a collision or the full motion of a system.
Important notes
The sign depends on the coordinate direction; the calculator does not model a collision or the full motion of a system.
Displayed outputs are rounded for readability; preserve full precision when continuing a calculation.
Frequently asked questions
What does this momentum calculator show?
Linear momentum combines an object’s mass with its signed velocity along a chosen axis.
Which inputs should I check first?
Enter mass in kilograms and velocity in metres per second. Negative velocity indicates the chosen negative direction.
Can the result be used as a final professional specification?
The sign depends on the coordinate direction; the calculator does not model a collision or the full motion of a system.
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Related explanations
Learn the method behind the number or compare the terminology before using the calculator.
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This page provides a calculation tool plus explanatory information so you can understand what the result means and when the underlying method may not fit your situation.